Existence is

“Our Universe and everything in it is continually changing, because our Universe is made of energy. Energy can only exist if it is in motion and changing. If energy stopped being in motion, our entire Universe and all Life would vanish. [kinetic energy becomes potential energy] Our lives are also energy, and therefore they too must always be in motion and continue to change. You cannot stop the motion and change in your life, and nor would you want to. The changing nature of energy gives us Life. It causes Life to grow and causes us to grow.”

However, she preceded that paragraph with this:
“Did you know that if your life was not changing, you would not exist?”

This assumes we are our form, our life. Existence is not made of energy, so continues to be, even when you are still. Indeed, existence is in stillness, just as life is in motion. It would be more accurate to say “Did you know that if your life was not changing, it would cease?” Death may seem the end of existence but it is not. It is simply the marker for yet another change in form.